broken " long-polling HTTP requests " link

[soxofaan]

openeo.org/documentation/1.0/glossary.md

Line 71 in 17e41f6

3. Processes can also be executed **on-demand** (i.e. synchronously). Results are delivered with the request itself and no job is created. Only lightweight computations, for example previews, should be executed using this approach as timeouts are to be expected for [long-polling HTTP requests](https://www.pubnub.com/blog/2014-12-01-http-long-polling/).

broken link https://www.pubnub.com/blog/2014-12-01-http-long-polling/

[soxofaan]

I would just drop the whole for long-polling HTTP requests thing, it's not that vital. I'm not sure "polling" is even the right terminology in this context

[m-mohr]

New URL is https://www.pubnub.com/blog/http-long-polling/
PRs are welcome.

[soxofaan]

So you would prefer to keep this link to this pubnub (which I don't know FYI)?
As mentioned above I would just drop the mention of long-polling as a whole.

[m-mohr]

No strong preference, but an explanation would be good.

Could also just be: "... should be executed using this approach as timeouts are to be expected for HTTP requests that are kept open for more than a couple of seconds."